参数资料
| 型号： | MX7837KN+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT DL MULT 24-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 15 |
| 设置时间： | 4µs |
| 位数： | 12 |
| 数据接口： | 并联 |
| 转换器数目： | 2 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 1.07W |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电压，单极；2 电压，双极 |
| 采样率（每秒）： | * |
MX7837/MX7847
Bipolar Operation (4-Quadrant
Multiplication)
Figure 7 shows the MX7837/MX7847 connected for
binary operation. The offset-binary coding is shown in
Table 4. When VIN is an AC signal, the circuit performs
4-quadrant multiplication. R1, R2, and R3 resistors
should be 0.01% ratio matched to maintain gain-error
specifications. On the MX7847, the RFB feedback
resistor is internally connected to VOUT.
Table 4. Bipolar Code Table
__________Applications Information
Ground Management
The use of an uninterrupted ground plane is strongly
recommended. AC or transient voltages between ana-
log and digital grounds (between AGNDA/AGNDB and
DGND) can inject noise into the analog circuitry.
Connect the MX7837/MX7847 AGNDs and DGND
directly to the ground plane or to a star ground to
ensure that they are at the same potential. In complex
systems with separate analog and digital ground
planes, connect two diodes (1N914 or equivalent) in
inverse parallel between the AGND and DGND pins.
Power-Supply Decoupling
To minimize noise, decouple the VDD and VSS lines to
DGND using a 10F capacitor in parallel with a 0.1F
ceramic capacitor. Minimize capacitor lead lengths for
best noise rejection.
Operation with Reduced
Power-Supply Voltages
The MX7837/MX7847 are specified for operation with
VDD/VSS = ±11.4V to ±16.5V. However, the output
amplifier requires 2.5V of headroom, so the reference
input should not come within 2.5V of VDD/VSS in order to
maintain accuracy at full scale.
Complete, Dual, 12-Bit
Multiplying DACs
8
_______________________________________________________________________________________
DAC A
AGNDA VSS
DGND
RFBA*
VOUTA*
VOUT
VIN
VDD
VREFA
VDD
MX7837
MX7847
* INTERNALLY CONNECTED ON MX7847
VSS
DAC A
AGNDA
VSS
DGND
RFBA*
VOUTA
VIN
VDD
VREFA
MX7837
MX7847
VOUT
R1
20k
R2
20k
R3
10k
MAX427
VDD
VSS
* INTERNALLY CONNECTED
ON MX7847
DAC Latch Contents
MSB
LSB
Analog Output, VOUT
1111 1111 1111
+×
V
2047
2048
IN
1000 0000 0001
+×
V
1
2048
IN
0111 1111 1111
×
V
1
2048
IN
0000 0000 0000
×
=
V
2048
V
IN
1000 0000 0000
0V
Note : 1LSB
V
2048
IN
=
Figure 6. Unipolar Binary Operation
Figure 7. Bipolar Offset Binary Operation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MX7837KN+ | 功能描述:数模转换器- DAC 12-Bit 12Ch Precision ADC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MX7837KR | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MX7837KR+ | 功能描述:数模转换器- DAC 12-Bit 12Ch Precision ADC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MX7837KR+T | 功能描述:数模转换器- DAC 12-Bit 12Ch Precision ADC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| MX7837KR-T | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
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